vendor/compiler-rt/compiler-rt-trunk-r301939

4 files changed, 52 insertions, 13 deletions

diff --git a/test/asan/TestCases/Linux/global-overflow-bfd.cc b/test/asan/TestCases/Linux/global-overflow-bfd.cc
new file mode 100644
index 000000000000..117a761af91f
--- /dev/null
+++ b/test/asan/TestCases/Linux/global-overflow-bfd.cc
@@ -0,0 +1,18 @@
+// Test that gc-sections-friendly instrumentation of globals does not introduce
+// false negatives with the BFD linker.
+// RUN: %clangxx_asan -fuse-ld=bfd -Wl,-gc-sections -ffunction-sections -fdata-sections -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
+
+#include <string.h>
+int main(int argc, char **argv) {
+  static char XXX[10];
+  static char YYY[10];
+  static char ZZZ[10];
+  memset(XXX, 0, 10);
+  memset(YYY, 0, 10);
+  memset(ZZZ, 0, 10);
+  int res = YYY[argc * 10];  // BOOOM
+  // CHECK: {{READ of size 1 at}}
+  // CHECK: {{located 0 bytes to the right of global variable}}
+  res += XXX[argc] + ZZZ[argc];
+  return res;
+}
diff --git a/test/asan/TestCases/Linux/global-overflow-lld.cc b/test/asan/TestCases/Linux/global-overflow-lld.cc
new file mode 100644
index 000000000000..f4d0bc977604
--- /dev/null
+++ b/test/asan/TestCases/Linux/global-overflow-lld.cc
@@ -0,0 +1,19 @@
+// Test that gc-sections-friendly instrumentation of globals does not introduce
+// false negatives with the LLD linker.
+// RUN: %clangxx_asan -fuse-ld=lld -Wl,-gc-sections -ffunction-sections -fdata-sections -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
+// REQUIRES: lld
+
+#include <string.h>
+int main(int argc, char **argv) {
+  static char XXX[10];
+  static char YYY[10];
+  static char ZZZ[10];
+  memset(XXX, 0, 10);
+  memset(YYY, 0, 10);
+  memset(ZZZ, 0, 10);
+  int res = YYY[argc * 10];  // BOOOM
+  // CHECK: {{READ of size 1 at}}
+  // CHECK: {{located 0 bytes to the right of global variable}}
+  res += XXX[argc] + ZZZ[argc];
+  return res;
+}
diff --git a/test/asan/TestCases/Linux/globals-gc-sections-lld.cc b/test/asan/TestCases/Linux/globals-gc-sections-lld.cc
new file mode 100644
index 000000000000..0d8bcdd1cb17
--- /dev/null
+++ b/test/asan/TestCases/Linux/globals-gc-sections-lld.cc
@@ -0,0 +1,15 @@
+// RUN: %clangxx_asan %s -o %t -Wl,--gc-sections -fuse-ld=lld -ffunction-sections -fdata-sections -mllvm -asan-globals=0
+// RUN: %clangxx_asan %s -o %t -Wl,--gc-sections -fuse-ld=lld -ffunction-sections -fdata-sections -mllvm -asan-globals=1
+
+// https://code.google.com/p/address-sanitizer/issues/detail?id=260
+// REQUIRES: lld
+
+int undefined();
+
+// On i386 clang adds --export-dynamic when linking with ASan, which adds all
+// non-hidden globals to GC roots.
+__attribute__((visibility("hidden"))) int (*unused)() = undefined;
+
+int main() {
+        return 0;
+}
diff --git a/test/asan/TestCases/Linux/globals-gc-sections.cc b/test/asan/TestCases/Linux/globals-gc-sections.cc
deleted file mode 100644
index 72a9e9498f85..000000000000
--- a/test/asan/TestCases/Linux/globals-gc-sections.cc
+++ /dev/null
@@ -1,13 +0,0 @@
-// RUN: %clangxx_asan %s -o %t -Wl,--gc-sections -ffunction-sections -mllvm -asan-globals=0
-// RUN: %clangxx_asan %s -o %t -Wl,--gc-sections -ffunction-sections -mllvm -asan-globals=1
-
-// https://code.google.com/p/address-sanitizer/issues/detail?id=260
-// XFAIL: *
-
-int undefined();
-
-int (*unused)() = undefined;
-
-int main() {
-        return 0;
-}